package java_demos.java_basic.instance_demos.about_string;

public class StringToUpperCaseEmp {
    public static void main(String[] args) {
        /**
         * @description: 字符串小写转大写
         * @author:
         * @date: 2024/5/29 下午3:14
         * @param: [args]
         * @return: void
         **/
        String str = "string runoob";
        String upperStr = str.toUpperCase();
        System.out.println(upperStr);

        String str1 = "UPPER STRING";
        String lowerStr = str1.toLowerCase();
        System.out.println(lowerStr);


    }
}
